Nonprofits in Sioux City, Iowa

Nonprofits in Sioux City, Iowa. Browse 615 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.

Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.

Nonprofit profiles

  1. 215 Recovery Foundation

    EIN 421480439 · Headquarters: Sioux City, IA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. 4 His Glory

    EIN 922679901 · Headquarters: SIOUX CITY, IA, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. 4-H Clubs & Affiliated 4-H Organizations

    EIN 320224438 · Headquarters: sioux City, IA, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  4. 4-H Clubs & Affiliated 4-H Organizations

    EIN 421347898 · Headquarters: SIOUX CITY, IA, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  5. 4-H Clubs & Affiliated 4-H Organizations

    EIN 421394228 · Headquarters: SIOUX CITY, IA, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  6. 4-H Clubs & Affiliated 4-H Organizations

    EIN 421514267 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  7. A H N Inc

    EIN 421510718 · Headquarters: Sioux City, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Aalfs Family Foundation

    EIN 421153158 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  9. Ability Tech Foundation

    EIN 862172636 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  10. Abu Bekr Shriners

    EIN 420114800 · Headquarters: SIOUX CITY, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Abu Bekr Shriners Group Return

    EIN 510155011 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Abu Bekr Shriners Holding Corporation

    EIN 270280012 · Headquarters: SIOUX CITY, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  13. Ada Frum Irrevocable Trust Security National Bank Trustee

    EIN 426395613 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  14. African Friends Shelter

    EIN 883698922 · Headquarters: SIOUX CITY, IA, US · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Ag & Rosalee Ireland Trust

    EIN 426346940 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  16. Agape

    EIN 843993872 · Headquarters: SIOUX CITY, IA, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. Aglow International

    EIN 371954961 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Aglow International

    EIN 930786387 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Alpha Delta Kappa Sorority Inc

    EIN 421169338 · Headquarters: Sioux City, IA, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  20. Alpha Omicron Pi Fraternity Inc

    EIN 426090024 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  21. Amalgamated Transit Union

    EIN 420653704 · Headquarters: SIOUX CITY, IA, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  22. Amateur Athletic Union of the United States

    EIN 208531512 · Headquarters: SIOUX CITY, IA, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  23. American Association of University Women

    EIN 426059515 · Headquarters: Sioux City, IA, US · Community Improvement & Capacity Building · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  24. American Chemical Society

    EIN 466015198 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. American Culinary Federation of Siouxland Inc

    EIN 472437901 · Headquarters: SIOUX CITY, IA, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  26. American Dental Assistants Association Northwest District

    EIN 421074533 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. American Federation of Labor & Congress of Industrial Orgs

    EIN 426077758 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. American Federation of State County & Municipal Employees

    EIN 426084873 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. American Federation of State County & Municipal Employees

    EIN 521650770 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. American Federation of State County & Municiple Employees

    EIN 352596009 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. American Heartland Railroad Society

    EIN 994387569 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. American Legion

    EIN 420113020 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. American Legion

    EIN 426076881 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. American Legion Auxiliary

    EIN 426075889 · Headquarters: Sioux City, IA, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  35. American Legion Auxiliary

    EIN 426075943 · Headquarters: Sioux City, IA, US · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  36. American Legion Auxiliary

    EIN 476042679 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. American Legion Duane M Nelson Post 1981

    EIN 421170324 · Headquarters: Sioux City, IA, US · Public & Societal Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  38. American Postal Workers Union

    EIN 420865108 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. American Togolese Community

    EIN 262367548 · Headquarters: SIOUX CITY, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. American Volkssport Association Inc

    EIN 912052988 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  41. Ancient & Accepted Scottish Rite of Freemasonry

    EIN 420527370 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. Ancient Free & Accepted Masons

    EIN 420371072 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  43. Ancient Free & Accepted Masons of Iowa

    EIN 237144330 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Ancient Free & Accepted Masons of Iowa

    EIN 237503292 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Ancient Free & Accepted Masons of Iowa

    EIN 420114819 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Ancient Free & Accepted Masons of Iowa

    EIN 420568900 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Ann Rehan Goebel Foundation

    EIN 923811829 · Headquarters: SIOUX CITY, IA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  48. Anthon-oto Education Association

    EIN 421314089 · Headquarters: SIOUX CITY, IA, US · Employment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  49. Arc of Iowa

    EIN 420942423 · Headquarters: sioux city, IA, US · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  50. Ardis Hartmann Tr Fbo Trinity Lutheran Church Akron Ia

    EIN 936513055 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Art Sux

    EIN 832675632 · Headquarters: Sioux City, IA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Association of Civilian Technicians Inc

    EIN 383745039 · Headquarters: Sioux City, IA, US · Employment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  53. Association of Fundraising Professionals

    EIN 470761941 · Headquarters: Sioux City, IA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  54. Association of Notre Dame Clubs Inc - Siouxland

    EIN 311075431 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Association of Talent Acquisition Professionals

    EIN 814062494 · Headquarters: SIOUX CITY, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  56. Aurelia Education Association

    EIN 421314296 · Headquarters: SIOUX CITY, IA, US · Education · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  57. Autism Society of America

    EIN 721568127 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Bayalas Learning Center Child Care

    EIN 475360464 · Headquarters: SIOUX CITY, IA, US · Human Services · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  59. Bb's Preschool and Childcare

    EIN 273083452 · Headquarters: SIOUX CITY, IA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  60. Become Best Foundation Inc

    EIN 333968984 · Headquarters: SIOUX CITY, IA, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Being Better Inc

    EIN 844319775 · Headquarters: SIOUX CITY, IA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Benevolent & Protective Order of Elks 112

    EIN 420136100 · Headquarters: Sioux City, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Berenstein Family Foundation

    EIN 421461615 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  64. Biblical Restoration Ministries Inc

    EIN 300344762 · Headquarters: SIOUX CITY, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. Big Brothers Big Sisters of Siouxland

    EIN 421121154 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Big Iron Charitable Foundation

    EIN 882343422 · Headquarters: SIOUX CITY, IA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Big Twelve Development Program

    EIN 204018698 · Headquarters: SIOUX CITY, IA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Birth Network

    EIN 451058753 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  69. Birthright of Siouxland Inc

    EIN 421292140 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  70. Blet Division 687 C/o Joe Japel

    EIN 426076968 · Headquarters: SIOUX CITY, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Bomgaars Family Foundation

    EIN 861224925 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  72. Boys & Girls Clubs of America

    EIN 421516490 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  73. Boys & Girls Home Residential Treatment Centers Inc

    EIN 420698175 · Headquarters: SIOUX CITY, IA, USA · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Boys and Girls Clubs of Siouxland Inc

    EIN 420940032 · Headquarters: SIOUX CITY, IA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Boys and Girls Home and Family Services Inc

    EIN 930991860 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. Boys and Girls Home of Alaska Inc

    EIN 208196128 · Headquarters: Sioux City, IA, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Boys and Girls Home of Nebraska Inc

    EIN 470753759 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  78. Boys and Girls Home of Sioux City Iowa

    EIN 421321099 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Briar Cliff University

    EIN 420707124 · Headquarters: SIOUX CITY, IA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Buddies for Life-down Syndrome Support Friendship Community

    EIN 208839378 · Headquarters: Sioux City, IA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  81. Butterfly Nation

    EIN 473990376 · Headquarters: Sioux City, IA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Buy Fresh Buy Local - Siouxland C/o Lewis Weinberg

    EIN 263295404 · Headquarters: SIOUX CITY, IA, USA · Health Care · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  83. Calvary Cemetery of Sioux City

    EIN 420698256 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Camp High Hopes

    EIN 201314342 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. Can Do Kidz

    EIN 991636563 · Headquarters: Sioux City, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  86. Castle on the Hill Apartments Tenants Association

    EIN 711022930 · Headquarters: Sioux City, IA, US · Housing & Shelter · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  87. Castle on the Hill Association

    EIN 421060599 · Headquarters: SIOUX CITY, IA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. Catherine Birzle Education Trust

    EIN 396782796 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  89. Catholic Charities of the Diocese of Sio Sioux City

    EIN 420681062 · Headquarters: SIOUX CITY, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Catholic Order of Foresters

    EIN 931228063 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  91. Catholic School Foundation of the Diocese of Sioux City

    EIN 237030715 · Headquarters: SIOUX CITY, IA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Catholic Womens League of Sc Ia Inc

    EIN 237185306 · Headquarters: SIOUX CITY, IA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990

  93. Cc Holdings

    EIN 993291251 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  94. Center for Siouxland

    EIN 421078435 · Headquarters: SIOUX CITY, IA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  95. Champions Professional Indoor Football League

    EIN 460589606 · Headquarters: SIOUX CITY, IA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Cheer Sux

    EIN 994245851 · Headquarters: Sioux City, IA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Child Evangelism Fellowship

    EIN 237616904 · Headquarters: SIOUX CITY, IA, USA · Religion Related · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  98. Child Evangelism Fellowship Inc

    EIN 237136453 · Headquarters: Sioux City, IA, US · Religion Related · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  99. Child Evangelism Fellowship Inc

    EIN 272779653 · Headquarters: Sioux City, IA, US · Religion Related · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  100. Child Evangelism Fellowship Inc

    EIN 310909282 · Headquarters: SIOUX CITY, IA, US · Youth Development · Latest available filing year: 2009 · Primary form: IRS Form 990-N

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